The alleged attack took place at The Atrium apartments on Key Boulevard at around 9:45 am Sunday. According to police, the suspect entered the building and began knocking on apartment doors, claiming to be a maintenance worker. When one resident opened her door, police say there was a struggle between the suspect and the woman, and suspect sexually assaulted her before running away.

The suspect is described as a black man in his early 20s who is approximately 6' tall with a slim build. He was wearing a gray hooded sweatshirt with dark pants , and was carrying a backpack. Video taken from inside an elevator in the building shows the suspect much more clearly, and at one point he looks directly into the surveillance camera.

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Police ask anyone with information about this case to call police at (703) 228-4183 or (866) 411-TIPS (8477).